A Rotating Modulation Imager for the Orphan Source Search Problem.
dc.contributor.author | Kowash, Benjamin Raymond | en_US |
dc.date.accessioned | 2009-02-05T19:25:02Z | |
dc.date.available | NO_RESTRICTION | en_US |
dc.date.available | 2009-02-05T19:25:02Z | |
dc.date.issued | 2008 | en_US |
dc.date.submitted | en_US | |
dc.identifier.uri | https://hdl.handle.net/2027.42/61617 | |
dc.description.abstract | This dissertation explores the application of a mechanically collimated imaging device known as a rotating modulation collimator (RMC) to the orphan source search problem. Orphan sources are lost radioactive sources (accidentally or through material diversion) that can pose a threat to both human health and national security when they fall into the wrong hands. The RMC is a simple imaging system that can see through complex background scenes that can often mask these lost sources. Key developments for this research include the development of a new system model for predicting the system response when the source is located at any distance from the detector, the design, construction, and characterization of a prototype RMC, new methods for locating sources in three dimensions with a RMC, a new operating mode for imaging extended sources, an initial study on adaptive imaging with the RMC, and a method for predicting the time required to detect a hidden source of a known activity to a given level of confidence. Results from simulations and measurements are used to asses the performance of the RMC for the orphan source search problem. | en_US |
dc.format.extent | 4244751 bytes | |
dc.format.extent | 1373 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | en_US |
dc.subject | Radiation Imaging Systems | en_US |
dc.subject | Rotating Modulation Collimators | en_US |
dc.subject | Search for Orphan Radioactive Sources | en_US |
dc.subject | Stand-off Detection of Radioactive Sources | en_US |
dc.title | A Rotating Modulation Imager for the Orphan Source Search Problem. | en_US |
dc.type | Thesis | en_US |
dc.description.thesisdegreename | PhD | en_US |
dc.description.thesisdegreediscipline | Nuclear Engineering & Radiological Sciences | en_US |
dc.description.thesisdegreegrantor | University of Michigan, Horace H. Rackham School of Graduate Studies | en_US |
dc.contributor.committeemember | Wehe, David K. | en_US |
dc.contributor.committeemember | Akcasu, Ziyaeddin A. | en_US |
dc.contributor.committeemember | Fessler, Jeffrey A. | en_US |
dc.contributor.committeemember | Fleming, Ronald F. | en_US |
dc.subject.hlbsecondlevel | Nuclear Engineering and Radiological Sciences | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/61617/1/kowashb_1.pdf | |
dc.owningcollname | Dissertations and Theses (Ph.D. and Master's) |
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